<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>user</title>
</head>
<body>
<h1> {{n1}}</h1>
<h1> {{n2}}</h1>
<h1> {{n2.0}}</h1>
{% for item in n2 %}
<span>{{item}}</span>
{% endfor %}
</body>
</html>